Horoscope writer Jonathan Cainer has died of a suspected cardiac arrest at the age of 58. His brother Daniel said his family believed he had suffered a heart attack after he was found collapsed in his office at the family's North Yorkshire home. The cause of death has not been officially confirmed.

The astrologer, whose star sign was Sagittarius, wrote for the Daily Mail. A spokesman for the newspaper said: "Millions of readers couldn't start the day without him - and would end it marvelling at the uncanny accuracy of his forecasts.

"It's an absolute tragedy that Jonathan has passed away at such a young age and we have no doubt his countless fans will join us in expressing heartfelt condolences to his family."

The Mail added that Cainer "quite simply, Britain's greatest astrologer" and that his death was a "tragedy".

It has been estimated that over twelve million people read his predictions, according to the Observer. Cainer's horoscope for Sagittarians on Monday was ominously foreboding. "We aren't here for long. We should make the most of every moment. We all understand this yet don't we forget it, many times? We get caught up in missions, battles and desires. We imagine that we have forever and a day.

"In one way, we may be right - for are we not eternal spirits, temporarily residing in finite physical form?"

The 58-year-old moved to the United States during the 1980s and worked as a nightclub manager. When he returned to Britain he enrolled at the Faculty of Astrological Studies and then became famous for his newspaper horoscopes.

He also wrote books on the language of planetary symbolism and junk food vegetarian as well as one of the first astrological computer programs. According to the Daily Mail, Cainer had a reported annual turnover of some £2m. He was married and had eight children from previous relationships.